fix: Fix message when auth key is not provided

Author: JanEbbing

CHANGELOG.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
+## [Unreleased]
+### Fixed
+* Fixed typo in error message when no auth key is provided.
+
+
 ## [1.16.0] - 2023-11-03
 ### Added
 * Add optional `context` parameter for text translation, that specifies
@@ -267,6 +272,7 @@ Version increased to avoid conflicts with old packages on PyPI.
 Initial version.
 
 
+[Unreleased]: https://github.com/DeepLcom/deepl-python/compare/v1.16.0...HEAD
 [1.16.0]: https://github.com/DeepLcom/deepl-python/compare/v1.15.0...v1.16.0
 [1.15.0]: https://github.com/DeepLcom/deepl-python/compare/v1.14.0...v1.15.0
 [1.14.0]: https://github.com/DeepLcom/deepl-python/compare/v1.13.0...v1.14.0

deepl/__main__.py

@@ -541,7 +541,7 @@ def main(args=None, prog_name=None):
         if auth_key is None:
             raise Exception(
                 f"Please provide authentication key via the {env_auth_key} "
-                "environment variable or --auth_key argument or via "
+                "environment variable or --auth-key argument or via "
                 f"{keyring_key_name} in {keyring_key_folder} in keyring"
             )